package com.atguigu.gulimall.auth.controller;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.TypeReference;
import com.atguigu.common.constant.AuthServerConstant;
import com.atguigu.common.utils.HttpUtils;
import com.atguigu.common.utils.R;
import com.atguigu.common.vo.MemberRespVo;
import com.atguigu.gulimall.auth.feign.MemberFeignService;
import com.atguigu.gulimall.auth.vo.SocialUser;
import lombok.extern.slf4j.Slf4j;
import org.apache.http.HttpResponse;
import org.apache.http.util.EntityUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestParam;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.util.HashMap;
import java.util.Map;

/**
 * @Author : Jungle
 * @Description : 处理社交登录请求
 * 社交登录回调
 */
@Slf4j
@Controller
public class OAuth2Controller {
    @Autowired
    private MemberFeignService memberFeignService;

    @GetMapping("/oauth2.0/weibo/success")
    public String weibo(@RequestParam("code") String code, HttpSession session, HttpServletResponse servletResponse, HttpServletRequest request) throws Exception {
        //这两个必须要加上，里面没有数据，用null替代会抛异常
        HashMap<String, String> header = new HashMap<>();
        HashMap<String, String> query = new HashMap<>();
        //1、根据code换取accessTokend
        Map<String, String> map = new HashMap<>(16);
        map.put("client_id", "4003673129");
        map.put("client_secret", "22e907cffed6e0b93136d79dcc584ba2");
        map.put("grant_type", "authorization_code");
        map.put("redirect_uri", "http://auth.gulimall.com/oauth2.0/weibo/success");
        map.put("code", code);
        HttpResponse response = HttpUtils.doPost("https://api.weibo.com", "/oauth2/access_token", "post", header, query, map);
        //2处理
        if (response.getStatusLine().getStatusCode() == 200) {
            //获取到了access_Token, json形式
            String json = EntityUtils.toString(response.getEntity());
            SocialUser socialUser = JSON.parseObject(json, SocialUser.class);
            //知道了当前是哪个社交用户
            //1、当前用户如果是第一次进  入网站，自动注册进来（为当前用户生成一个会员信息账号，以后这个社交账号就对应指定的会员）
            //登录或者注册这个用户
            R oauthLogin = memberFeignService.oauthLogin(socialUser);
            if (oauthLogin.getCode() == 0) {
                MemberRespVo data = oauthLogin.getData("data", new TypeReference<MemberRespVo>() {
                });
                log.info("登录成功：用户信息==>{}",data.toString());
                //1、第一次使用session,命令浏览器保存卡号 JSESSIONID cookie
                //以后浏览器访问哪个网站就会带上这个网站的cookie
                //子域之间：gulimall.com  auth.gulimall.com  order.gulimall.com
                //发卡的时候（指定域名为父域名），即使是子域系统发的卡，也能让父域系统直接使用
                // TODO: 2022/2/24  1、默认发的令牌  作用域：当前域 （解决子域共享问题）
                // TODO: 2022/2/24 2、使用JSON序列化方式来序列化对象数据到redis中
                session.setAttribute(AuthServerConstant.LOGIN_USER,data);
                //3.登录成功就跳回首页
                return "redirect:http://gulimall.com";
            } else {
                //失败，跳回登录页面
                return "redirect:http://auth.gulimall.com/login.html";
            }
        } else {
            //登录失败
            return "redirect:http://auth.gulimall.com/login.html";
        }

    }
}
